(S/E) From the church car park, join Rue Beaudouin and follow it to the left. There is a gate leading to Château de Vigny.
(1) Take Chemin du Bourbier on the right, follow it and pass a first intersection.
(2) At the top of the road, at the Croix Jacquedot, turn left onto Chemin de Vernon. Follow it straight ahead until it joins the D51, which you take to the left towards Théméricourt.
(3) After the left-hand bend, take the first road on the right, which goes around a farm towards the cemetery.
(4) The road passes behind the castle, which is the headquarters of the Maison du Parc du Vexin. Continue past the cemetery until you reach a T-junction with a wayside cross on your right.
(5) Turn left towards Avernes and join the Grande Rue (Route de Beauvais).
(6) Turn left, cross the village via the Route de Beauvais and continue straight ahead on the Grande Rue.
(7) At the exit, turn left onto Rue Valette, continue along this road and pass Rue du Château.
(8) Turn right onto a path along a wall. Continue straight ahead on the path until you reach the Croix Saint-Lucien.
(9) Turn left onto the D51 and take the first road on the right. Leave a road on your left and, at the T-junction, turn left.
(10) At the next junction, take the road on the right, go straight ahead and follow the wall of the Château de Vigny until you reach the D169.
(11) Turn left, pass in front of the castle and return to the church car park (S/E).